US1149993A - Curtain-roller. - Google Patents

Description

c. L. BUNDY & w. GRANT.

CURT AIN ROLLER. APPLICATION FILED AUG-3.1914.

1,149,993o Patentd Aug. 10, 1915.

mumu n I UNITED A STATES. PATE O EQ CYRUS L. ZB'UNDY, or EAST ORANGE, Am) WILLIAM GRANT, or PASSAIC, vnw zrnnsnr.

To all whom it may concern I.

-Be it known that we, CYRUs L. BUNDY and WILLIAM GRANT, citizens of the United States, residing at East Orange, in the county of .Essergand Passaic, in the county of Passaic, New Jersey, respectively, have invented certain new and useful Improvements in Curtain-Rollers,-of which the fol lowing is a specification.

' purpose, the roller spring exertingja constant tensionto' elevate the curtainbyrotating the roller. 7 In order that the roller spring shall at all times be under suliicienttension as it lifts the curtain from its lowermost'to its'uppermost position, it is necessary that the spring shall be under some degree of tension even when the curtain is fully wound up and in order to maintainthe spring under tension while installing the curtain roller in its brackets it is usual to employ a pawl orother detent whereby to hold the spring, spindle and roller against relative movement until the spear head of the spindle is safely engaged within its bracket and then in some manner to release: such detent in order to allow the spring to exertits force on the roller; likewise to interengage' the spindle and roller before dismounting from the brackets so as to prevent unwindingof ily understood a preferred embodimentof the same is set forth in the accompanying drawing and in the subjoined detailed description based thereon' As, however, the

invention is capable of embodiment in otherand various constructional forms the drawing and description are to be taken in an illustrative and not in an unnecessarily limiting sense.

CUR AIN-ROLLER. v I

Specification 'of Letters Patent. Patent d A 1 915,

App1ication filed AugustS, 1914. Scria1No.854,835. I

In the drawing-Figure 1 is a side View of one end of aroller embodying the inventi0n;.F 2 is a similar view partly in longitudinalvertical section; Fig. 3 is an end view with the detent disengaged; and Fig.

4 is an end View" with the detent engaged.

. In the drawings the reference'numeral ll designates the barrel of the roller within which is axiallyamounted the spindle l2provided with the usual spear head 13 V and connected withthe barrel by ,means'of a torsion spring 14. The spindlehas its end bearing within the cylindrical flange/l5 ofan end platerlti fitted within'the end of the roller, this general construction being well known incurtain rollers. 'VVithin one side of the spindle adgacentthe spearhead is a recess 17 which occupies a position within the plane of the depression of the'end plate 16.

Adjacent that end of the roller within which is mounted the spindle 12 the roller shell is depressed longitudinally and transversely at 18 to accommodate a 'T-shaped lever-19 the T head 20 of which forms a counterweight, .the said lever being fulcrumed' upon a pin 21 and having its outer end at 22 disposed within a slot of the end plate 16. Upon. the end plate ispivoted at 23 a pawl 2a the tooth 25 ofwhichis adapted to engage within the recess '17 of the mally rests against the arm 22o]? thelever 19.

JWhen installing the curtainkrolle'r the spear head is rotated slightly with the curspindle while the head of the pawl 26 nor-' tain in an unwound condition and'the pawl is then caused to engage within the recess by swinging the lever 19 upon its fulcrum either by engaging the counterweighted end ofthe same with the finger or if the curtain the roller the counterweighted"end 20 will act by gravity to operate the lever and press the pawl into the recess. 1 The pawl having once been engaged within the recess the r be held with the lever on the lower side of curtain is then wound up and as the lever 19 is substantially flush with the roller surface the curtain overliesthe said lever and holds the same out of engagement with the the curtain be grasped and partially un-;

wound thebeveledsurface 27 of the pawl tooth 25 will ride up on the wall of the recess and disengage the pawl. Thereafter in the operation of winding and unwinding the curtain the pawl will be held out of the recess both by gravity and also bycentrifw gal action, and the action of the torsion spring 14 will be controlled solely by the frictional engagement of the shoes within the guides of the Window frame.

When it is desired to dismount the curtain from the window it will first be unwound. to, its. full extent and as soon as the lever 19 is released from the. restraint of the curtain wound thereon it will drop by gravity to the position indicated in dotted lines inFig. 2, pressingthe pawl upward and causingits tooth 'to engagewithin the recess of the spindle,"thus locking the barrel and spindle against relative rotation under the influence of the spring and permitting the curtain roller to be removed from its I brackets without releasing the spring'let.

Thereafter, as thespring is under full tension, the curtain will be replaced within its brackets in an unwound condition and the spring will again be rendered operative bya slight unwinding movement causing the beveled surface 27. to ride upon the wall of the recess as before described.

,It will thus be seen that the invention provides not only mechanical means for en- 3 gaging the pawl within the recess in the first instance, but means for automatically reengaging the pawl and recess at any time when it is desired to remove the curtain roller from its brackets for any purpose, the

configuration of the pawl itself providing for the disengagement of the same after installation.

1. In a curtain roller, a barrel, a spindle j therein adapted for engagement within suping the barrel and spindle,the'spindle provided with a recess and the barrel with a pawl for engagement therein, the pawltend ing to avoid engagement with the recess, and pawl operating means for pressing the pawl into engagement withthe recess, said means held inoperative when the curtain is wound 4. In. a curtain" roller, a barrel, a spindle therein ada ted for en a ement within su porting brackets, a torsion spring connect:

ing the barrel and spindle, the spindle pro vided-with a single downwardly opening re cess and the barrel with a pawl for engagement therein, the pawl tending under gravity and centrifugal action to remain disengaged from the recess, and pawl operating means tending by gravity to press the pawl into engagement with the recess, said means held inactive by the curtain when wound on the roller. i

5. In a curtain roller, a barrel, a spindle therein adapted for engagement within supporting brackets, a torsion spring connecting the barrel. and spindle, the spindle provided with a recess and the barrel with a pawl for engagement therein, the pawl tending undergravity and centrifugal action to remain disengaged from the recess, and a counterweighted lever lying substantially flush withthe roller surface and having its counterweighted arm underlying the curtain on the roller and, its other arm disposed adjacent the pawl, the lever held inactive by the curtain when wound on the roller and released and allowed to act on the pawl to press the same into the recess when the curtain is unwound.

CYRUS L. BUNDY. M. GRANT.v lVitnesses ALFRED ZIMMER, JAMES A. ODQNNELL.

Copies efthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C.

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